<p>Race car driver, Jim Douglas goes to Monte Carlo to enter his car, Herbie, in the Monte Carlo rally. When they get there, Herbie falls for another driver&#39s car and Jim falls for the driver Diane, who thinks he&#39s weird. But what they don&#39t know is that a pair of thieves who stole a very valuable diamond, hid it in Herbie&#39s gas tank. And the thieves try to get it back.</p>